package/busybox/patches/300-netmsg.patch

   1 --- a/include/applets.h
   2 +++ b/include/applets.h
   3 @@ -282,6 +282,7 @@ IF_MT(APPLET(mt, _BB_DIR_BIN, _BB_SUID_D
   4  IF_MV(APPLET(mv, _BB_DIR_BIN, _BB_SUID_DROP))
   5  IF_NAMEIF(APPLET(nameif, _BB_DIR_SBIN, _BB_SUID_DROP))
   6  IF_NC(APPLET(nc, _BB_DIR_USR_BIN, _BB_SUID_DROP))
   7 +IF_NETMSG(APPLET(netmsg, _BB_DIR_BIN, _BB_SUID_REQUIRE))
   8  IF_NETSTAT(APPLET(netstat, _BB_DIR_BIN, _BB_SUID_DROP))
   9  IF_NICE(APPLET(nice, _BB_DIR_BIN, _BB_SUID_DROP))
  10  IF_NMETER(APPLET(nmeter, _BB_DIR_USR_BIN, _BB_SUID_DROP))
  11 --- a/include/usage.h
  12 +++ b/include/usage.h
  13 @@ -3166,6 +3166,9 @@
  14
  15  #endif
  16
  17 +#define netmsg_trivial_usage NOUSAGE_STR
  18 +#define netmsg_full_usage ""
  19 +
  20  #define netstat_trivial_usage \
  21         "[-laentuwxr"IF_FEATURE_NETSTAT_WIDE("W")IF_FEATURE_NETSTAT_PRG("p")"]"
  22  #define netstat_full_usage "\n\n" \
  23 --- a/networking/Config.in
  24 +++ b/networking/Config.in
  25 @@ -628,6 +628,12 @@ config NC
  26           A simple Unix utility which reads and writes data across network
  27           connections.
  28
  29 +config NETMSG
  30 +       bool "netmsg"
  31 +       default n
  32 +       help
  33 +         simple program for sending udp broadcast messages
  34 +
  35  config NC_SERVER
  36         bool "Netcat server options (-l)"
  37         default n
  38 --- a/networking/Kbuild
  39 +++ b/networking/Kbuild
  40 @@ -25,6 +25,7 @@ lib-$(CONFIG_IP)           += ip.o
  41  lib-$(CONFIG_IPCALC)       += ipcalc.o
  42  lib-$(CONFIG_NAMEIF)       += nameif.o
  43  lib-$(CONFIG_NC)           += nc.o
  44 +lib-$(CONFIG_NETMSG)       += netmsg.o
  45  lib-$(CONFIG_NETSTAT)      += netstat.o
  46  lib-$(CONFIG_NSLOOKUP)     += nslookup.o
  47  lib-$(CONFIG_NTPD)         += ntpd.o
  48 --- /dev/null
  49 +++ b/networking/netmsg.c
  50 @@ -0,0 +1,63 @@
  51 +/*
  52 + * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
  53 + *
  54 + * This is free software, licensed under the GNU General Public License v2.
  55 + */
  56 +#include <sys/types.h>
  57 +#include <sys/socket.h>
  58 +#include <netinet/in.h>
  59 +#include <netdb.h>
  60 +#include <stdio.h>
  61 +#include <stdlib.h>
  62 +#include <string.h>
  63 +#include "busybox.h"
  64 +
  65 +
  66 +#ifndef CONFIG_NETMSG
  67 +int main(int argc, char **argv)
  68 +#else
  69 +int netmsg_main(int argc, char **argv)
  70 +#endif
  71 +{
  72 +       int s;
  73 +       struct sockaddr_in addr;
  74 +       int optval = 1;
  75 +       unsigned char buf[1001];
  76 +
  77 +       if (argc != 3) {
  78 +               fprintf(stderr, "usage: %s <ip> \"<message>\"\n", argv[0]);
  79 +               exit(1);
  80 +       }
  81 +
  82 +       if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
  83 +               perror("Opening socket");
  84 +               exit(1);
  85 +       }
  86 +
  87 +       memset(&addr, 0, sizeof(addr));
  88 +       addr.sin_family = AF_INET;
  89 +       addr.sin_addr.s_addr = inet_addr(argv[1]);
  90 +       addr.sin_port = htons(0x1337);
  91 +
  92 +       memset(buf, 0, 1001);
  93 +       buf[0] = 0xde;
  94 +       buf[1] = 0xad;
  95 +
  96 +       strncpy(buf + 2, argv[2], 998);
  97 +
  98 +       if (setsockopt (s, SOL_SOCKET, SO_BROADCAST, (caddr_t) &optval, sizeof (optval)) < 0) {
  99 +               perror("setsockopt()");
 100 +               goto fail;
 101 +       }
 102 +
 103 +       if (sendto(s, buf, 1001, 0, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
 104 +               perror("sendto()");
 105 +               goto fail;
 106 +       }
 107 +
 108 +       return 0;
 109 +
 110 +fail:
 111 +       close(s);
 112 +       exit(1);
 113 +}